JP2014153711A - Flexible display device - Google Patents

Flexible display device Download PDF

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JP2014153711A
JP2014153711A JP2014010320A JP2014010320A JP2014153711A JP 2014153711 A JP2014153711 A JP 2014153711A JP 2014010320 A JP2014010320 A JP 2014010320A JP 2014010320 A JP2014010320 A JP 2014010320A JP 2014153711 A JP2014153711 A JP 2014153711A
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electrode
actuator
flexible display
display device
initial shape
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JP6310706B2 (en
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Yong-Suk Yeo
庸碩 呂
Kikan Gyo
基漢 魚
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Samsung Display Co Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/03—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/0009—Materials therefor
    • G02F1/0018—Electro-optical materials
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/02—Flexible displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/10—Transparent electrodes, e.g. using graphene
    • H10K2102/101—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO]
    • H10K2102/103—Transparent electrodes, e.g. using graphene comprising transparent conductive oxides [TCO] comprising indium oxides, e.g. ITO
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Computer Hardware Design (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Human Computer Interaction (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a flexible display device which enables accurate control of a change state of the display and can reduce power consumption required to change and drive the display.SOLUTION: A flexible display device includes: a display body having flexibility; an actuator for changing and driving the display body; and an initial shape setting substrate for maintaining the initial shape of the display body before being changed and driven. For example, the actuator comprises a first electrode and a second electrode which face each other, and an electro-active polymer layer that is interposed between the first electrode and the second electrode.

Description

本発明は、フレキシブルディスプレイ装置に関する。   The present invention relates to a flexible display device.

一般的に、フレキシブルディスプレイ装置は、ポリイミドのような可撓性基板にディスプレイ部を形成して、柔軟性を付加した装置であって、携帯時にその形態を変形させて、大きさを変化させる非常に便利な長所を有している。   In general, a flexible display device is a device in which a display portion is formed on a flexible substrate such as polyimide to add flexibility, and the size of the flexible display device is changed by changing its shape when carried. Has the advantage of being convenient.

ところで、これまでは、このようなディスプレイの変形を正確に制御できる手段がなかった。そのため、ユーザがディスプレイを大体のところで曲げたり開いたりするだけであって、携帯するために大きさを変化させる時にも、正確な形状に変形させることが容易ではなく、逆に画面を見るためにディスプレイを平らに開く時にも、正確なフラット形に変形させることが困難であった。   Until now, there has been no means for accurately controlling such deformation of the display. For this reason, the user simply bends or opens the display roughly, and when changing the size to carry it, it is not easy to transform it into an accurate shape. Even when the display is opened flat, it is difficult to deform it into an accurate flat shape.

したがって、このような不便を解消するためには、ディスプレイの変形状態を正確に制御できる新たな構造のフレキシブルディスプレイ装置が要求されている。   Therefore, in order to eliminate such inconvenience, a flexible display device having a new structure that can accurately control the deformation state of the display is required.

そこで、本発明は、上記問題に鑑みてなされたものであり、本発明の目的とするところは、ディスプレイの変形状態を正確に制御でき、ディスプレイを変形させるための駆動に必要な電力消耗も減らせるように改善されたフレキシブルディスプレイ装置を提供することである。   Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to accurately control the deformation state of the display and reduce the power consumption required for driving to deform the display. An improved flexible display device is provided.

上記課題を達成するために、本発明によれば、柔軟性のあるディスプレイ本体と、前記ディスプレイ本体を変形駆動させるアクチュエータと、前記ディスプレイ本体が変形する前の初期形状を維持する初期形状設定基板と、を備えるフレキシブルディスプレイ装置が提供される。   To achieve the above object, according to the present invention, a flexible display main body, an actuator for driving the display main body to be deformed, an initial shape setting substrate for maintaining an initial shape before the display main body is deformed, and , A flexible display device is provided.

また、前記アクチュエータは、互いに対向する第１電極及び第２電極と、前記第１電極と前記第２電極との間に介在する電気活性高分子層と、を備えるものであってもよい。   The actuator may include a first electrode and a second electrode facing each other, and an electroactive polymer layer interposed between the first electrode and the second electrode.

また、前記第１電極と第２電極との間に電圧が印加されたときに、前記電気活性高分子層が伸張しながら変形が起きるものであってもよい。   The electroactive polymer layer may be deformed while being stretched when a voltage is applied between the first electrode and the second electrode.

また、前記電気活性高分子層は、ＰＶＤＦ(Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ Ｆｌｕｏｒｉｄｅ)、ＰＤＭＳ(Ｐｏｌｙｄｉｍｅｔｈｙｌ Ｓｉｌｏｘａｎ)、ＰＶＦＴ(Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ Ｆｌｕｏｒｉｄｅ−ｃｏ−Ｔｒｉｆｌｕｏｒｏｅｔｈｙｌｅｎｅ)のうちのいずれか一つの材料を含むものであってもよい。   The electroactive polymer layer may include one of PVDF (Polyvinylidene Fluoride), PDMS (Polydimethyl Siloxane), and PVFT (Polyvinylidene Fluoride-co-Trifluoroethylene).

また、前記第１電極及び前記第２電極は、ＩＴＯ（Ｉｎｄｉｕｍ Ｔｉｎ Ｏｘｉｄｅ）を含むものであってもよい。   The first electrode and the second electrode may include ITO (Indium Tin Oxide).

また、前記アクチュエータは、前記第１電極と前記第２電極との間に前記電気活性高分子層が介在した一つの基本ユニットからなるものとしてもよい。   The actuator may be composed of one basic unit in which the electroactive polymer layer is interposed between the first electrode and the second electrode.

また、前記アクチュエータは、前記第１電極と前記第２電極との間に前記電気活性高分子層が介在した基本ユニットが多段に積層された複層形態を成すものとしてもよい。   The actuator may have a multi-layer configuration in which a basic unit in which the electroactive polymer layer is interposed between the first electrode and the second electrode is laminated in multiple stages.

また、前記初期形状設定基板は、前記ディスプレイ本体の初期形状を折り畳み状態で維持させ、前記アクチュエータの駆動によって、前記ディスプレイ本体がフラット状態に広げられるものであってもよい。   The initial shape setting board may maintain the initial shape of the display body in a folded state, and the display body may be expanded in a flat state by driving the actuator.

また、前記初期形状設定基板は、マグネシウム、アルミニウム、鉛のうちいずれか一つを含む合金材料からなるものであってもよい。   The initial shape setting substrate may be made of an alloy material containing any one of magnesium, aluminum, and lead.

また、前記ディスプレイ本体に、前記初期形状設定基板の一面が付着され、当該初期形状設定基板の他面に、前記アクチュエータが付着されるものであってもよい。   Further, one surface of the initial shape setting substrate may be attached to the display body, and the actuator may be attached to the other surface of the initial shape setting substrate.

また、前記ディスプレイ本体に、前記アクチュエータの一面が付着され、当該アクチュエータの他面に、前記初期形状設定基板が付着されるものであってもよい。   Further, one surface of the actuator may be attached to the display body, and the initial shape setting substrate may be attached to the other surface of the actuator.

以上説明したように本発明によれば、ディスプレイの変形状態を正確に制御でき、ディスプレイの変形駆動に必要な電力消耗も減らすことができるので、利便性を改善すると同時に、装置の低消費電力化も実現できる。   As described above, according to the present invention, the deformation state of the display can be accurately controlled, and the power consumption necessary for driving the deformation of the display can be reduced. Therefore, the convenience is improved and the power consumption of the apparatus is reduced. Can also be realized.

本発明の一実施形態によるフレキシブルディスプレイ装置を示す図である。1 is a diagram illustrating a flexible display device according to an exemplary embodiment of the present invention. 図１に示されたフレキシブルディスプレイ装置の駆動前の初期状態を示す図である。It is a figure which shows the initial state before the drive of the flexible display apparatus shown by FIG. 図１に示されたフレキシブルディスプレイ装置の駆動過程を示す図である。FIG. 3 is a diagram illustrating a driving process of the flexible display device illustrated in FIG. 1. 図１に示されたフレキシブルディスプレイ装置のうち、アクチュエータの構造を示す図である。It is a figure which shows the structure of an actuator among the flexible display apparatuses shown by FIG. 図４Ａに示されたアクチュエータの駆動前の状態を示す図である。It is a figure which shows the state before the drive of the actuator shown by FIG. 4A. 図４Ａに示されたアクチュエータの駆動後の状態を示す図である。It is a figure which shows the state after the drive of the actuator shown by FIG. 4A. 図１に示されたフレキシブルディスプレイ装置の変形例を示す図である。It is a figure which shows the modification of the flexible display apparatus shown by FIG. 図１に示されたフレキシブルディスプレイ装置の変形例を示す図である。It is a figure which shows the modification of the flexible display apparatus shown by FIG.

以下に添付図面を参照しながら、本発明の好適な実施の形態について詳細に説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。   Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

図１は、本発明の一実施形態によるフレキシブルディスプレイ装置１００を示した図面である。図１に示したように、本実施形態のフレキシブルディスプレイ装置１００は、柔軟性のあるディスプレイ本体１３０と、このディスプレイ本体１３０の一面に付着された初期形状設定基板１２０と、その初期形状設定基板１２０の他面に付着されたアクチュエータ１１０と、を備えている。１０１は、接着層を表す。   FIG. 1 is a view illustrating a flexible display apparatus 100 according to an embodiment of the present invention. As shown in FIG. 1, the flexible display device 100 according to the present embodiment includes a flexible display main body 130, an initial shape setting substrate 120 attached to one surface of the display main body 130, and the initial shape setting substrate 120. And an actuator 110 attached to the other surface. 101 represents an adhesive layer.

ディスプレイ本体１３０は、柔軟な可撓性基板上に画像を具現するための薄膜トランジスタと、発光素子と、それらを覆って保護する封止層とが積層された構造体であるが、ここでは、これをディスプレイ本体１３０と簡略に称する。このディスプレイ本体１３０は、硬いガラス基板の代わりに、柔軟な可撓性基板が使用されるため、その柔軟性の許容範囲内で自由に曲げられる特性を有している。   The display main body 130 is a structure in which a thin film transistor for embodying an image on a flexible flexible substrate, a light emitting element, and a sealing layer that covers and protects the thin film transistor are stacked. Is simply referred to as a display main body 130. Since the display main body 130 uses a soft flexible substrate instead of a hard glass substrate, the display main body 130 has a characteristic of being freely bent within the allowable range of the flexibility.

初期形状設定基板１２０は、弾性係数が比較的低いマグネシウム、アルミニウム、鉛などの合金を鋳型で鋳造して形成したものであって、フレキシブルディスプレイ装置１００の初期状態を、図２のような折り畳み状態になるように維持させる機能を有する。すなわち、初期形状設定基板１２０は、鋳造により、図２のようなＵ字形の折り畳み状態に作られ、この状態で逆方向に外力が加えられない限り、その状態をそのまま維持する。したがって、初期形状設定基板１２０と結合されたディスプレイ本体１３０も、非使用時には、折り畳み状態を維持している。   The initial shape setting substrate 120 is formed by casting an alloy such as magnesium, aluminum, lead or the like having a relatively low elastic coefficient with a mold, and the initial state of the flexible display device 100 is folded as shown in FIG. It has the function to maintain it. That is, the initial shape setting substrate 120 is made into a U-shaped folded state as shown in FIG. 2 by casting, and this state is maintained as it is unless an external force is applied in the opposite direction. Therefore, the display main body 130 combined with the initial shape setting substrate 120 also maintains the folded state when not in use.

アクチュエータ１１０は、初期形状設定基板１２０に接着層１０１を介して付着されている。アクチュエータ１１０は、図４Ａに示したように、互いに対向する第１電極１１１と第２電極１１２との間に、電気活性高分子層１１３が介在した構造を有している。アクチュエータ１１０は、第１電極１１１と第２電極１１２との間に電圧が印加されることによって、電気活性高分子層１１３が伸張しながら、ベンディング力が作用する原理により駆動される。   The actuator 110 is attached to the initial shape setting substrate 120 via the adhesive layer 101. As shown in FIG. 4A, the actuator 110 has a structure in which an electroactive polymer layer 113 is interposed between a first electrode 111 and a second electrode 112 facing each other. The actuator 110 is driven on the principle that a bending force acts while the electroactive polymer layer 113 expands when a voltage is applied between the first electrode 111 and the second electrode 112.

図４Ｂ及び図４Ｃは、アクチュエータ１１０の駆動原理を概略的に説明するための図である。図４Ｂに示したように、電流が流れない時には、電気活性高分子層１１３が初期の厚さ及び長さを維持している。この状態で、前記第１電極１１１と第２電極１１２との間に電圧が印加されると、図４Ｃに示したように、電気活性高分子層１１３の長さが長くなる。この時、アクチュエータ１１０の一側面は、初期形状設定基板１２０に付着されて拘束されているので、反対側面の長さが相対的により長くなりながら、ベンディング力が作用する。逆に、第１電極１１１と第２電極１１２との間に印加された電圧が解除されると、電気活性高分子層１１３は、再び図４Ｂの状態に復元され、ベンディング力が作用する前の状態に戻る。本実施形態では、フレキシブルディスプレイ装置１００は、初期形状設定基板１２０によって初期状態がＵ字形に折り畳まれた状態であるので、図４Ｂのように、アクチュエータ１１０に電圧が印加される前の状態でフレキシブルディスプレイ装置１００は折り畳み状態になり、図４Ｃのように、アクチュエータ１１０に電圧が印加された状態でフレキシブルディスプレイ装置１００はフラット状態になる。   4B and 4C are diagrams for schematically explaining the driving principle of the actuator 110. FIG. As shown in FIG. 4B, when no current flows, the electroactive polymer layer 113 maintains the initial thickness and length. In this state, when a voltage is applied between the first electrode 111 and the second electrode 112, the length of the electroactive polymer layer 113 increases as shown in FIG. 4C. At this time, since one side surface of the actuator 110 is attached to and restrained by the initial shape setting substrate 120, the bending force acts while the length of the opposite side surface becomes relatively longer. Conversely, when the voltage applied between the first electrode 111 and the second electrode 112 is released, the electroactive polymer layer 113 is restored to the state of FIG. 4B again, before the bending force acts. Return to state. In this embodiment, since the initial state of the flexible display device 100 is folded into a U shape by the initial shape setting substrate 120, the flexible display device 100 is flexible in a state before the voltage is applied to the actuator 110 as shown in FIG. 4B. The display device 100 is in a folded state, and the flexible display device 100 is in a flat state when a voltage is applied to the actuator 110 as shown in FIG. 4C.

図３は、このようなアクチュエータ１１０のベンディング力の作用による駆動状態を示した図である。フレキシブルディスプレイ装置１００は、アクチュエータ１１０が駆動されると、初期形状設定基板１２０によってＵ字形に折り畳まれた状態から、ベンディング力が作用しながら、フラット状態に広がる。   FIG. 3 is a diagram showing a driving state of the actuator 110 by the action of the bending force. When the actuator 110 is driven, the flexible display device 100 expands from a state folded by the initial shape setting substrate 120 into a flat state while a bending force acts.

このような駆動原理によって、アクチュエータ１１０が駆動されると、このアクチュエータ１１０と結合されたディスプレイ本体１３０も付随して広がる。逆に、アクチュエータ１１０に印加される電圧が解除されると、ディスプレイ本体１３０は、初期形状設定基板１２０によって規定されている本来のＵ字形の折り畳み状態に戻る。   When the actuator 110 is driven according to such a driving principle, the display main body 130 coupled to the actuator 110 also expands. Conversely, when the voltage applied to the actuator 110 is released, the display main body 130 returns to the original U-shaped folded state defined by the initial shape setting board 120.

電気活性高分子層１１３としては、ＰＶＤＦ(Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ Ｆｌｕｏｒｉｄｅ)、ＰＤＭＳ(Ｐｏｌｙｄｉｍｅｔｈｙｌ Ｓｉｌｏｘａｎ)、ＰＶＦＴ(Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ Ｆｌｕｏｒｉｄｅ−ｃｏ−Ｔｒｉｆｌｕｏｒｏｅｔｈｙｌｅｎｅ)を使用することができる。前記第１電極１１１，第２電極１１２としては、柔軟性のあるＩＴＯ（Ｉｎｄｉｕｍ Ｔｉｎ Ｏｘｉｄｅ）を使用することができる。もちろん、電気活性高分子層１１３、前記第１電極１１１、第２電極１１２は、二つの電極の間に電圧が印加された時に、伸長しながらベンディングを誘導するものであれば、他の材料であってもよい。   As the electroactive polymer layer 113, PVDF (Polyvinylidene Fluoride), PDMS (Polydimethylsiloxane), PVFT (Polyvinylidene Fluoride-co-Trifluoroethylene) can be used. As the first electrode 111 and the second electrode 112, flexible ITO (Indium Tin Oxide) can be used. Of course, the electroactive polymer layer 113, the first electrode 111, and the second electrode 112 may be made of other materials as long as they induce bending while stretching when a voltage is applied between the two electrodes. There may be.

以上のように構成されるフレキシブルディスプレイ装置１００は、次のように使用することができる。まず、フレキシブルディスプレイ装置１００の非使用時には、図２に示したように、初期形状設定基板１２０によって折り畳み状態を維持する。この状態では、アクチュエータ１１０に電圧が印加されないので、電力が消耗されることもなく、この状態で、装置１００を携帯または保管すれば良い。折り畳み状態では、フレキシブルディスプレイ装置１００の長さが半分に減るため、携帯及び保管が非常に便利になる。そして、この状態では、上述したように、アクチュエータ１１０に電圧が印加されないため(図４Ｂ状態)、携帯及び保管中に電力が浪費される問題もなくなる。   The flexible display device 100 configured as described above can be used as follows. First, when the flexible display device 100 is not used, the folded state is maintained by the initial shape setting substrate 120 as shown in FIG. In this state, no voltage is applied to the actuator 110, so that power is not consumed, and the device 100 may be carried or stored in this state. In the folded state, the length of the flexible display device 100 is reduced by half, which makes it very convenient to carry and store. In this state, as described above, no voltage is applied to the actuator 110 (the state shown in FIG. 4B), so that there is no problem of wasting power during carrying and storage.

一方、フレキシブルディスプレイ装置１００を使用する時には、アクチュエータ１１０の第１電極１１１及び第２電極１１２の間に電圧を印加する。これにより、電気活性高分子層１１３が伸張しながら(図４Ｃの状態)、図３のように、フレキシブルディスプレイ装置１００が開き始め、最終的には、図１のようなフラット状態に変わる。したがって、この状態で、ディスプレイ本体１３０を駆動すれば、真直ぐに広がった画面を見ることができる。   On the other hand, when the flexible display device 100 is used, a voltage is applied between the first electrode 111 and the second electrode 112 of the actuator 110. As a result, while the electroactive polymer layer 113 is stretched (state of FIG. 4C), the flexible display device 100 starts to open as shown in FIG. 3, and finally changes to a flat state as shown in FIG. Therefore, if the display main body 130 is driven in this state, a straight screen can be seen.

次いで、フレキシブルディスプレイ装置１００の使用を終了した時には、アクチュエータ１１０に印加された電圧が解除されるにつれて、フレキシブルディスプレイ装置１００は、初期形状設定基板１２０によって規定されている折り畳み状態に戻る。   Next, when the use of the flexible display device 100 is finished, the flexible display device 100 returns to the folded state defined by the initial shape setting substrate 120 as the voltage applied to the actuator 110 is released.

したがって、アクチュエータ１１０の駆動によって、折り畳み状態及びフラット状態が制御されるので、携帯時及び保管時においてフレキシブルディスプレイ装置１００を曲げた状態とする一方、使用時に真直ぐに広げて見る操作が、正確で簡便になる。したがって、本実施形態のフレキシブルディスプレイ装置１００は、携帯時の利便性及び使用時の利便性がいずれも改善される。   Therefore, since the folded state and the flat state are controlled by the driving of the actuator 110, the flexible display device 100 is bent when being carried and stored, and the operation of spreading and looking straight at the time of use is accurate and simple. become. Therefore, the flexible display device 100 according to the present embodiment is improved in both convenience during use and convenience during use.

また、非使用状態である折り畳み状態では、アクチュエータ１１０により電力を消耗することなく、使用中にのみ電力が消耗されるので、電力が浪費されることもなくなる。   Further, in the folded state that is not in use, power is not consumed by the actuator 110 and power is consumed only during use, so that power is not wasted.

また、説明した実施形態では、アクチュエータ１１０の構造が第１電極１１１と第２電極１１２との間に電気活性高分子層１１３が介在した一つの単位ユニットで構成されていることを例示した。ただし、図５に示した変形例のように、複数の電極２１１，２１３，２１５，２１７の間にそれぞれ電気活性高分子層２１２，２１４，２１６が介在した多段構造、すなわち、一対の電極と電気活性高分子層とから成る単位ユニットを複数備えて多段に積層されたアクチュエータ２１０としてもよい。このように、アクチュエータ２１０が多段に構成されれば、ベンディング力が強くなる。   Further, in the described embodiment, the structure of the actuator 110 is exemplified by the single unit unit in which the electroactive polymer layer 113 is interposed between the first electrode 111 and the second electrode 112. However, as in the modification shown in FIG. 5, a multi-stage structure in which electroactive polymer layers 212, 214, and 216 are interposed between a plurality of electrodes 211, 213, 215, and 217, that is, a pair of electrodes and an electric The actuator 210 may include a plurality of unit units each including an active polymer layer and stacked in multiple stages. In this way, if the actuator 210 is configured in multiple stages, the bending force is increased.

また、説明した実施形態のフレキシブルディスプレイ装置１００では、初期形状設定基板１２０の一面にディスプレイ本体１３０が付着され、他面にアクチュエータ１１０が付着された構造を例示した。ただし、図６に示した変形例のように、アクチュエータ３２０の一面にディスプレイ本体３３０が付着され、他面に初期形状設定基板３１０が付着されたフレキシブルディスプレイ装置３００としてもよい。もちろん、この場合は、アクチュエータ３２０の両面が、ディスプレイ本体３３０及び初期形状設定基板３１０にそれぞれ結合されて拘束されているため、ベンディング力が弱くなるが、その両面に対する結合力に差を与えれば、適切なベンディング力を実現することができる。   In the flexible display device 100 according to the embodiment described above, the structure in which the display main body 130 is attached to one surface of the initial shape setting substrate 120 and the actuator 110 is attached to the other surface is illustrated. However, as in the modification shown in FIG. 6, a flexible display device 300 in which the display main body 330 is attached to one surface of the actuator 320 and the initial shape setting substrate 310 is attached to the other surface may be used. Of course, in this case, since both surfaces of the actuator 320 are coupled and restrained by the display main body 330 and the initial shape setting substrate 310, the bending force is weakened. Appropriate bending power can be realized.

以上説明したフレキシブルディスプレイ装置１００，３００は、携帯時に、本体を電力消耗のない折り畳み状態で保管し、使用時にのみアクチュエータを駆動して、真直ぐに広げて見ることができる。したがって、電力消耗を最小化しながら、携帯時の利便性及び使用時の利便性をいずれも改善することができる。   The flexible display devices 100 and 300 described above can be viewed in a straight line when the main body is stored in a folded state with no power consumption and the actuator is driven only when in use. Therefore, it is possible to improve both the convenience during carrying and the convenience during use while minimizing power consumption.

以上、添付図面を参照しながら本発明の好適な実施形態について詳細に説明したが、本発明はかかる例に限定されない。本発明の属する技術の分野における通常の知識を有する者であれば、特許請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本発明の技術的範囲に属するものと了解される。   The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention pertains can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that these also belong to the technical scope of the present invention.

本発明は、ディスプレイ装置関連の技術分野に好適に適用可能である。   The present invention can be suitably applied to a technical field related to a display device.

１００，３００ フレキシブルディスプレイ装置
１０１ 接着層
１１０，３２０ アクチュエータ
１２０，３１０ 初期形状設定基板
１３０，３３０ ディスプレイ本体
100, 300 Flexible display device 101 Adhesive layer 110, 320 Actuator 120, 310 Initial shape setting substrate 130, 330 Display main body

Claims (11)

柔軟性のあるディスプレイ本体と、
前記ディスプレイ本体を変形駆動させるアクチュエータと、
前記ディスプレイ本体が変形する前の初期形状を維持する初期形状設定基板と、
を備えるフレキシブルディスプレイ装置。 A flexible display body,
An actuator for deforming and driving the display body;
An initial shape setting substrate for maintaining an initial shape before the display body is deformed;
A flexible display device comprising: 前記アクチュエータは、互いに対向する第１電極及び第２電極と、前記第１電極と前記第２電極との間に介在する電気活性高分子層と、を備えることを特徴とする請求項１に記載のフレキシブルディスプレイ装置。   2. The actuator according to claim 1, comprising a first electrode and a second electrode facing each other, and an electroactive polymer layer interposed between the first electrode and the second electrode. Flexible display device. 前記第１電極と第２電極との間に電圧が印加されたときに、前記電気活性高分子層が伸張しながら変形が起きることを特徴とする請求項２に記載のフレキシブルディスプレイ装置。   The flexible display device according to claim 2, wherein when a voltage is applied between the first electrode and the second electrode, the electroactive polymer layer is deformed while being stretched. 前記電気活性高分子層は、ＰＶＤＦ(Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ Ｆｌｕｏｒｉｄｅ)、ＰＤＭＳ(Ｐｏｌｙｄｉｍｅｔｈｙｌ Ｓｉｌｏｘａｎ)、ＰＶＦＴ(Ｐｏｌｙｖｉｎｙｌｉｄｅｎｅ Ｆｌｕｏｒｉｄｅ−ｃｏ−Ｔｒｉｆｌｕｏｒｏｅｔｈｙｌｅｎｅ)のうちのいずれか一つの材料を含むことを特徴とする請求項２又は３に記載のフレキシブルディスプレイ装置。   The electroactive polymer layer includes one of PVDF (Polyvinylidene Fluoride), PDMS (Polydimethyl Siloxane), and PVFT (Polyvinylidene Fluoride-co-Trifluoroethylene). The flexible display apparatus as described. 前記第１電極及び前記第２電極は、ＩＴＯ（Ｉｎｄｉｕｍ Ｔｉｎ Ｏｘｉｄｅ）を含むことを特徴とする請求項２又は３に記載のフレキシブルディスプレイ装置。   4. The flexible display device according to claim 2, wherein the first electrode and the second electrode include ITO (Indium Tin Oxide). 5. 前記アクチュエータは、前記第１電極と前記第２電極との間に前記電気活性高分子層が介在した一つの基本ユニットからなることを特徴とする請求項２〜５のいずれか一項に記載のフレキシブルディスプレイ装置。   6. The actuator according to claim 2, wherein the actuator is composed of one basic unit in which the electroactive polymer layer is interposed between the first electrode and the second electrode. Flexible display device. 前記アクチュエータは、前記第１電極と前記第２電極との電極の間に前記電気活性高分子層が介在した基本ユニットが多段に積層された複層形態を成すことを特徴とする請求項２〜５のいずれか一項に記載のフレキシブルディスプレイ装置。   3. The actuator according to claim 2, wherein the actuator has a multi-layer configuration in which basic units in which the electroactive polymer layer is interposed between the first electrode and the second electrode are stacked in multiple stages. The flexible display device according to claim 5. 前記初期形状設定基板は、前記ディスプレイ本体の初期形状を折り畳み状態に維持させ、前記アクチュエータの駆動によって、前記ディスプレイ本体がフラット状態に広げられることを特徴とする請求項１〜７のいずれか一項に記載のフレキシブルディスプレイ装置。   The said initial shape setting board | substrate maintains the initial shape of the said display main body in a folding state, and the said display main body is extended in a flat state by the drive of the said actuator. The flexible display apparatus as described in. 前記初期形状設定基板は、マグネシウム、アルミニウム、鉛のうちいずれか一つを含む合金材料からなることを特徴とする請求項１〜８のいずれか一項に記載のフレキシブルディスプレイ装置   The flexible display device according to claim 1, wherein the initial shape setting substrate is made of an alloy material including any one of magnesium, aluminum, and lead. 前記ディスプレイ本体に、前記初期形状設定基板の一面が付着され、当該初期形状設定基板の他面に、前記アクチュエータが付着されることを特徴とする請求項１〜９のいずれか一項に記載のフレキシブルディスプレイ装置。   The one surface of the initial shape setting substrate is attached to the display body, and the actuator is attached to the other surface of the initial shape setting substrate. Flexible display device. 前記ディスプレイ本体に、前記アクチュエータの一面が付着され、当該アクチュエータの他面に、前記初期形状設定基板が付着されることを特徴とする請求項１〜９のいずれか一項に記載のフレキシブルディスプレイ装置。
10. The flexible display device according to claim 1, wherein one surface of the actuator is attached to the display body, and the initial shape setting substrate is attached to the other surface of the actuator. .
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